KR20100096376A - Preparation method of deodorant for removing polymer-derived odor and deodorant obtained thereby - Google Patents

Abstract

PURPOSE: A manufacturing method of a deodorizing agent and a deodorizing agent manufactured thereby are provided, which can remove bad smell material like the amine/ammonia group and volatile organic compound. CONSTITUTION: A manufacturing method of a deodorizing agent comprises: a step of manufacturing silicate compound by adding sodium silicate, aluminium nitrate and urea to purified water; and a step of adding the zinc chloride and manganese chloride and dipping after dispersing silicate compound in the purified water. The step of manufacturing silicate compound includes: a step of dissolving by pouring sodium silicate, aluminium nitrate, and urea into the purified water; a step of manufacturing a white product by reacting while stirring solution; and a step of filtering and drying the manufactured white product.

Description

Preparation method of deodorant for removing odor derived from a polymer material and deodorant obtained according to the above production method {{Preparation method of deodorant for removing polymer-derived odor and deodorant obtained}}

The present invention relates to a method for preparing a deodorant capable of removing odorous substances such as amines / ammonias and volatile organic compounds derived from plastic resins, and a deodorant obtained according to the method.

In recent years, as the standard of living improves, noise, vibration, dust as well as odor that are unpleasant to everyday life are regulated as pollution, and regulations under related laws are being tightened.

Typically, malodorous substances include nitrogen compounds such as ammonia and amines; Sulfur compounds such as hydrogen sulfide and alkylthiol; Aldehyde compounds such as formaldehyde, acetaldehyde, propionaldehyde, butylaldehyde, pentanealdehyde, hexanal; Organic acids such as formic acid, acetic acid, propionic acid, butyric acid and valeric acid.

Conventional deodorizing methods for removing such odors include a chemical mask deodorizing method (masking method) that uses a fragrance or fragrance such as fragrance to smell olfactory. Chemical deodorization which decomposes using oxidation, reduction, neutralization, addition condensation, ion exchange reaction, or the like; Physical adsorption method for collecting by using porous materials such as activated carbon, zeolite and silica gel; Or it is roughly classified into a biological deodorization method that inhibits using microorganisms, enzymes, preservatives and the like.

However, the chemical deodorization is easy to produce new odor or toxicity depending on natural or synthetic ingredients, and the physical adsorption method is effective, but the odor is regenerated according to environmental conditions or long-term use. Therefore, the difference in activity is large, the efficacy is uneven. Chemical deodorization is possible in various developments, but there is a limit to the overall deodorization power by the selective mechanism.

On the other hand, due to the product using polymer materials such as automobiles, electronic products, household goods, etc. developed for the convenience of life, the new car syndrome, the new house syndrome, etc. have recently emerged as a great social problem.

Among polymer materials that are widely used, plastics such as polyethylene, polypropylene, polyvinyl chloride, polyacetal, etc. are closely related to human life, and smell of amines, ammonia, and volatile organic compounds generated from such plastic resins. There is a need to improve new car or kennel syndrome by removing it.

An object of the present invention is to provide a method for preparing a deodorant for removing an odor derived from a polymer material capable of removing odorous substances such as amines / ammonia and volatile organic compounds, and a deodorant obtained by the method.

In order to achieve the above object, the present invention

Preparing a silicate compound by adding sodium silicate, aluminum nitrate and urea to purified water; And dispersing the silicate compound in purified water, and then adding zinc chloride and manganese chloride to carry thereon, thereby providing a method for preparing a deodorant for removing an odor derived from a polymer material.

The preparing of the silicate compound may include 63 to 65 wt% of the sodium silicate, 3 to 5 wt% of the aluminum nitrate, 10 to 12 wt% of the urea, and the remaining amount of purified water.

The preparing of the silicate compound may include: dissolving sodium silicate, aluminum nitrate, and urea in purified water; Reacting the obtained solution with stirring to prepare a white product; And filtering and drying the white product prepared above.

The preparing of the white product is preferably performed while stirring for 3 to 4 hours while maintaining a reaction temperature of 95 to 110 ° C.

In the supporting step, 13 to 15% by weight of a silicate compound, 0.4 to 0.5% by weight of zinc chloride, 0.1 to 0.3% by weight of manganese chloride and a balance of purified water are mixed and supported.

In more detail, the supporting step may include dispersing the silicate compound in purified water and then dissolving zinc chloride and manganese chloride in the dispersion; Reacting the obtained solution with stirring; And filtering and drying the obtained reactant.

The reaction is preferably carried out while stirring for 4 to 5 hours while maintaining a reaction temperature of 45 to 55 ℃.

The present invention also provides a deodorant for removing odor derived from a polymer material, which is obtained according to the above production method.

The deodorant prepared according to the present invention can efficiently remove odorous substances such as amines / ammonia and volatile organic compounds, and can be applied to a polymer plastic resin or the like that causes a new car or a bird house syndrome. It can improve the damage of the syndrome.

Hereinafter, the present invention will be described in more detail with reference to the following examples. However, the scope of the present invention is not limited to the following examples.

The method for preparing a deodorant according to the present invention includes preparing a silicate compound and supporting zinc chloride and manganese chloride in the silicate compound.

The step of preparing the silicate compound is first formed by adding sodium silicate, aluminum nitrate and urea to purified water. That is, after adding purified water to 63 to 65% by weight sodium silicate, 3 to 5% by weight aluminum nitrate, 10 to 12% by weight urea completely dissolved.

At this time, when the sodium silicate and aluminum nitrate added to the purified water is added less than the content range, an amorphous product is produced, and when more than the content range is added, the white product is hardly produced or other than these products. It contains a lot of other impurities, so it is not well supported in the supporting step of zinc chloride and manganese chloride which will be described later.

And, urea is to help the reaction of sodium silicate and aluminum nitrate, when less than the content range does not occur the reaction of sodium silicate and aluminum nitrate, if more than the content range, such as reverse reaction or ammonia May cause odor.

A solution of sodium silicate, aluminum nitrate and urea is reacted through stirring at a temperature of 95 to 110 ° C. for 3 to 4 hours to yield a white product. The product is separated from the purified water using a centrifugal filter at room temperature and washed with purified water to remove impurities from the white product. Thereafter, the white product from which the impurities are removed is put in a dry oven, and dried at 120 to 140 ° C. for 5 to 6 hours to obtain a silicate compound.

After dispersing the silicate compound thus obtained in purified water, zinc chloride and manganese chloride are added to the dispersion to dissolve the dissolved metal solution, which is inserted into the pores of the silicate compound or adhered to the surface thereof. That is, after dispersing by adding an appropriate amount of water to 13 to 15% by weight of the silicate compound, 0.4 to 0.5% by weight of zinc chloride and 0.1 to 0.3% by weight of manganese chloride are added to dissolve the zinc chloride and manganese chloride on the silicate compound. .

At this time, when zinc chloride and manganese chloride are added less than the content range, the removal effect of the odor component is reduced. When the zinc chloride and manganese chloride are added more than the content range, zinc chloride and manganese chloride are exceeded while exceeding the supporting limit of the silicate compound. There is a problem in that the support of the silicate compound is not well made, or when the physical property is applied to the polymer resin in the future.

Thus, the reactant obtained by reacting a mixture of silicate compound, zinc chloride and manganese chloride in purified water by stirring for 4 to 5 hours at a temperature of 45 to 55 ℃ is separated from the purified water using a centrifugal filter. Then, the separated product is put in a dry oven and dried at 120 to 140 ° C. for 5 to 6 hours to obtain a solid deodorant having a moisture content of 5% or less. Thus, the deodorizing agent of the present invention has a structure of Al ₂ Si ₂ O ₅ (OH) _X M _Y.

1 illustrates a reactor before the deodorant according to the present invention removes odors derived from a polymer material, for example, ammonia, amines and volatile organic compounds. As shown in FIG. 1, not only the metal supported on the silicate compound, that is, zinc and manganese, removes the malodorous substance, but also the silicate itself can reduce the malodorous substance.

<Example: Deodorant Preparation>

First, 122.7 g of sodium silicate, 8.6 g of aluminum nitrate, and 21.6 g of urea were added to 37.5 ml of purified water, and then completely dissolved. The reaction temperature was raised to 100 ° C. and stirred for 3 hours to obtain a white product. The temperature was lowered to room temperature, washed with a centrifugal filter, washed with a filter, and dried to obtain a white silicate compound.

500 g of the silicate compound obtained above was added to 3 L of purified water, and then 20 g of zinc chloride and 8 g of manganese chloride were added to dissolve completely. Thereafter, the product of the zinc chloride and the manganese chloride supported on the silicate compound was obtained by stirring at a reaction temperature of 50 ° C. for 4 hours. As before, a filter was performed using a centrifugal filter and dried to obtain a solid powder. A deodorant in the state was prepared.

Experimental Example: Evaluation of Deodorant

In order to evaluate the deodorant prepared in the previous example, 3L Tedler bags were injected with 3L of N ₂ gas of 99.99% concentration through a dry test meter, respectively, 2000 ppm of ammonia and 100 ppm of trimethylamine (TMA) standard gas and toluene. 50 ppm each was injected. After each test tube, blank test with GC-FID, 0.2g of deodorant according to the present invention was added, left at room temperature for 30 minutes, and analyzed by the same method as the blank test to derive the results. It was.

As a result, the concentration of malodorous substances was significantly reduced by the treatment of the deodorant according to the present invention as shown in Table 1 below. Accordingly, the deodorant can efficiently remove odorous substances such as amines / ammonia and volatile organic compounds, and can be used by being introduced into a polymer plastic resin or the like which causes a new car or a sick house syndrome.

ammonia TMA toluene Blank 30 minutes later Removal rate Blank 30 minutes later Removal rate Blank 30 minutes later Removal rate shame 1886 ppm 2 ppm 99.89% 98 ppm 3 ppm 96.94 48 ppm 6 ppm 87.5%

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

1 is a state diagram showing the odor removal reaction of the deodorant according to an embodiment of the present invention.

Claims (8)

Preparing a silicate compound by adding sodium silicate, aluminum nitrate and urea to purified water; And After dispersing the silicate compound in purified water, and adding zinc chloride and manganese chloride to support the method of producing a deodorant for removing the odor derived from the polymer material. The method according to claim 1, Preparing the silicate compound, 63 to 65% by weight of sodium silicate, 3 to 5% by weight of aluminum nitrate, 10 to 12% by weight of urea and the remaining amount of purified water. The method according to claim 1, Preparing the silicate compound, Dissolving sodium silicate, aluminum nitrate and urea in purified water; Reacting the obtained solution with stirring to prepare a white product; And The method of manufacturing a deodorant for removing odor derived from a polymer material, characterized in that it comprises the step of filtering and drying the prepared white product. The method according to claim 3, Preparing the white product, Method for producing a deodorant for removing the odor derived from the polymer material, characterized in that the reaction for 3 to 4 hours while maintaining a reaction temperature of 95 to 110 ℃. The method according to claim 1, The supporting step, 13 to 15% by weight of a silicate compound, 0.4 to 0.5% by weight of zinc chloride, 0.1 to 0.3% by weight of manganese chloride and a residual amount of purified water to prepare a deodorant for removing the odor derived from the polymer material. The method according to claim 1, The supporting step, Dispersing the silicate compound in purified water and dissolving zinc chloride and manganese chloride in the dispersion; Reacting the obtained solution with stirring; And The method of manufacturing a deodorant for removing odor derived from a polymer material, comprising the step of filtering and drying the obtained reactant. The method according to claim 6, The step of reacting, Method for producing a deodorant for removing the odor derived from the polymer material, characterized in that the reaction while stirring for 4 to 5 hours while maintaining a reaction temperature of 45 to 55 ℃. A deodorant for removing odor derived from a polymer material, obtained according to the method according to any one of claims 1 to 7.

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